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Tire puncture sealant

a puncture sealant and tire technology, applied in the field of tire puncture sealant, can solve the problems of repeated vibration of the puncture repair kit, and the puncture sealant described in japanese patent no. 3210863 will not exhibit satisfactory sealing performance, and achieve excellent sealing performance and excellent storage performan

Active Publication Date: 2012-04-03
THE YOKOHAMA RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention relates to a tire puncture sealant that has excellent sealing performance and storage performance. The inventors discovered that by using a natural rubber latex and a copolymer resin emulsion of an ester of versatic acid and vinyl alcohol in a specific ratio, a non-ionic surfactant, and an antifreezing agent, they could create a sealant that overcomes the issues associated with conventional sealants. The invention also includes a manufacturing method and a puncture repair kit for use in tire puncture repairs.

Problems solved by technology

Therefore, the puncture repair kits are subjected to repeated vibration when the vehicle moves and are exposed to extremely high temperatures inside the vehicle or inside the trunk on hot sunny days.
By taking into account such actual storage conditions, there is a high probability that the puncture sealant described in Japanese Patent No. 3210863 will not exhibit satisfactory sealing performance after being stored in a vehicle for a long period of time.

Method used

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Examples

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examples

[0110]The present invention will now be described in greater detail using the following examples, but is in noway restricted to these examples.

1. Manufacturing the Tire Puncture Sealant

(1) Components

[0111]Details of the components indicated in Table 1 (Examples 1 to 25) and Table 2 (Comparative examples 1 to 7) are as follows.

Main Components

[0112]NR latex: Natural rubber latex (Hytex HA, manufactured by Fulflex and available from Nomura Trading Co., Ltd.; Solid content=60 mass %)[0113]VEVA emulsion: Ethylene-vinyl acetate-VEOVA copolymer resin emulsion (Product name: Sumikaflex 950HQ, manufactured by Sumitomo Chemtex; Solid content=approximately 53 mass %)[0114]EVA emulsion: Ethylene-vinyl acetate copolymer resin emulsion (product name: Sumikaflex 408HQE, manufactured by Sumitomo Chemtex; Solid content=approximately 50 mass %)

Tackifier[0115]Terpene phenol resin emulsion (product name: R1050, manufactured by Yasuhara Chemical Co., Ltd.)

Antifreezing Agents[0116]Propylene glycol (manuf...

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Abstract

A tire puncture sealant having both excellent sealing performance and excellent storage performance, specifically a tire puncture sealant containing a natural rubber latex (A) and a VEVA copolymer resin emulsion (B), wherein the solid content mass of the natural rubber latex (A) / solid content mass of the VEVA copolymer resin emulsion (B) is between 80 / 20 and 15 / 85.

Description

PRIORITY CLAIM[0001]This application is based upon and claims the benefit of priority from Japanese Patent Application Nos. 2009-147871 and 2009-214287, filed Jun. 22, 2009, the entire contents of both of which is incorporated herein by reference.BACKGROUND[0002]1. Technical Field[0003]The present invention relates to a tire puncture sealant.[0004]2. Related Art[0005]Automobile manufacturers are more frequently providing puncture repair kits as standard or optional equipment. Such puncture repair kits contain a tire puncture sealant as an essential constituent and can also include a compressor as an optional constituent. Actual products are generally compact packages that combine the tire puncture sealant, known as an “emergency tire puncture repairing agent” or the like, and a low capacity compressor that draws power via a cigarette lighter socket.[0006]Conventionally, products containing a rubber latex and / or a resin emulsion, an antifreezing agent and a tackifier have been widely...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): B29C73/10
CPCC08L7/00C08L7/02C08L23/0853C08L29/04C08L71/02C08K5/053C08K5/42C08L2205/03C08L2666/06C08L2666/04C08L2666/08
Inventor TAKAHARA, HIDEYUKIOKAMATSU, TAKAHIRO
Owner THE YOKOHAMA RUBBER CO LTD
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